Ambient Air Dryer with Improvements in Performance, Safety, Ease of Use and Cost of Manufacture

ABSTRACT

The already energy saving ambient air dryer is improved in methods of manufacture, performance, increased safety devices, and storage options which include in part: construction in pieces of different manufacture for assembly to lower cost, added inhibitors to extend life and durability, extrusions on the drum functioning as scoops to cause additional ambient air to be passed through the clothes, light and reflector system so moving drum may be visible at night or in partial light, non-defeating GFCI system, specific designed energy efficient motor, programmed functions such as stopping the drum in “access” or “park” position and sounding alarm for pre-determined operational issues, remote control as well as control box on dryer frame, a system for capturing lint and particulates, motion/heat detectors which eliminate need for safety guard surrounding moving drum, sound emitters to keep animals away, security codes for operation, and collapsible drum and frame for compact storage.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable

REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTINGCOMPACT DISC APPENDIX

Not Applicable

BACKGROUND OF THE INVENTION

Hastings U.S. Pat. No. 4,236,322, discloses an apparatus for dryingarticles of clothing and the like in the open, ambient air. As showntherein, a drum of a convenient size having screen-like sides isrotatably supported on a frame. A motor mounted on the support frame iscoupled to the drum by a belt and rotates the drum so that the objectstherein are tumbled.

It has been found that a dryer constructed as shown therein performswell and has numerous advantages over conventional enclosed clothesdryers which use heat produced, usually, by electricity or gas. The mostobvious advantage, of course, is the great saving in energy since only asmall part of the power consumed by a conventional dryer is needed toturn the drum of the dryer disclosed in the above-mentioned patent.

It has been found, however, that the apparatus shown in U.S. Pat. No.4,236,322 could be more suitable for use under some circumstances andcould be manufactured in a simpler and less expensive manner. Therotating drum is exposed, presenting the hazard that a person,particularly a child, might be injured by inserting a hand, for example,between the drum and frame, coming into contact with the moving drum orbeing caught between the belt and drum or pulley.

Accordingly Hastings U.S. Pat. No. 4,702,018, provided an improveddrying apparatus having a rotatable drum enclosed within a housingfunctioning as a guard which provides safety but does not significantlyimpede air flow and access to the dryer.

A further object of the above mentioned patent provided such a dryerwhich can be produced in large quantity at reasonable cost and which issafe and effective to use.

The dryer with a guard as shown in the above mentioned patent can stillpose safety risks. Persons can still approach the dryer while the drumis rotating within the guard and, since the guard must be an open meshconstruction, thrust a small item through an opening of the guard. Thereremains the possibility that persons, children in particular, could pickup small sticks, wire, a nail, screwdriver or other small object andstick it through the openings on the guard causing not only damage tothe dryer, but perhaps causing considerable injury to such persons ifone of the aforesaid objects were thrown back at them or caught theirfingers or clothing. The guard adds significant additional weight to theappliance, making it more cumbersome and difficult to maneuver, whilealso greatly increasing the cost of the dryer in terms of materialsused, time of manufacture and assembly as well as increased shippingcosts.

Perque U.S. Pat. No. 5,809,663 advances a portable solar powered clothesdryer. The Ambient Air Clothes Dryer of U.S. Pat. No. 4,702,018 alreadydepicted the dryer in a portability state with a frame and wheels andmade no reference to a specific size. U.S. Pat. No. 5,809,663 furtheradvances the claim that the “perforated hamper” be black to maximize theheat energy from the sun by the dark color of the hamper. While this mayenhance the drying capabilities in some way of the aforementionedpatent, it is not applicable to this ambient air dryer. The principle ofthis ambient air dryer is the use of solar heated ambient air entering aperforated rotating drum and expelling moisture laden air, not a devicewhich further collects or heats the air. In the testing of the presentembodiment of both a black and a yellow ambient air dryer, there hasbeen no significant noticeable difference in the efficiency of thedryer. The exposed surface area of the present embodiment of the dryerdrum contains large numbers of holes, making it difficult to collect anydemonstrable amount of heat from the rays of the sun, the dryer drum inmotion constantly changes its attitude to the sun's rays and continuallyexpels the moisture laden air within the drum through the perimeter ofthe drum thereby actually cooling the surface of the drum no matter whatthe color.

Ford U.S. Pat. No. 7,178,265 uses a fan to provide axial airflow throughthe drum. This drum is comprised of an impervious cylindrical walldefining a diameter. The present embodiment in this application of thedryer drum has perforations both on the sides and perimeter of the drumand air is drawn in the sides and expelled out the perimeter by therotating motion of the drum itself and not with any cumbersome externalpower consumptive source which blows air through the drum.

One of the principal benefits of the ambient air clothes dryer is energysavings. Increased energy savings not only with operation, butmanufacture, and ease of use coupled with appropriate and additionalsafety measures are to be desired.

BRIEF SUMMARY OF THE INVENTION

Accordingly, the object of the present invention is to improve thealready energy saving ambient air dryer with more energy andecologically friendly savings in operation as well as manufacturecoupled with appropriate and additional safety features, not impeding,but increasing, the performance and effectiveness of the ambient airdryer. In addition the present improvements make the dryer lesscumbersome and easier to operate.

The preferred embodiment of the drum in the two prior Pat. Nos.4,236,322 and 4,702,018, was in a shape of a cylinder and in the mostrecent patent, of injected molded plastic. By definition, a deviceformed of injected molded plastic must be formed in a mold in whichmolten plastic resin is injected under pressure. A steel mold of thesize needed for this device would be necessarily large and expensive.Parts made with this procedure are cost effective, but only when made invery large quantities. With advances of recent years and broadenedexperience in manufacturing allowing for lower cost options in theplastic molding industry, this drum can now also be made in differentand multiple ways. For ease in description, the two vertical planes ofthe drum will be referred to as the “sides” of the drum and thecylindrical portion of the drum joining these two sides will be referredto as the “perimeter” of the drum. The preferred embodiment as shown inthis patent utilizes more than one process of manufacturing to formseparate pieces to be attached and/or fitted together to form therotatable drum. The frame for the drum is formed of blow molded plastic,roto molded plastic or other suitable material with shaped forms ofinjected molded plastic, metal mesh and/or other appropriate materialattached to the drum frame. This type of manufacture allows the dryer tobe made with much smaller, less energy consuming injectors (injectorswhich initially also cost far less than the huge injectors needed forinjecting a large plastic part) or with a combination of plastic andother suitable materials. If the configuration of the drum iscylindrical, it can be driven by rollers or a belt. However, it is notnecessary that the sides of the drum be circular in shape so long asthere is provision for a carrier for a drive belt included on onelocation of the drum so a belt can rotate the drum.

The resin used for the preferred embodiment of the dryer drum providesfor the use of re-cycled or partially re-cycled resin, cutting the costof the resin needed for the manufacture of the parts and dramaticallycutting the energy costs of the initial resin production.

A major factor in any plastic device being used outdoors is the life anddurability of the resin. The use of carbon black, the most efficient UVinhibitor in addition to being the most cost effective, substantiallyextends the life and durability of the resin when this device is usedoutdoors. Non static electricity additive is also added to the resinprimarily as a safety precaution. Leaving clothes in the rotating drumlong after they have dried does not damage clothing, but items made offabrics such as nylon can become full of static electricity if the resinis not treated with an additive to prevent the static electricity.

To enhance the airflow into the dryer drum, extrusions shaped likescoops are molded into or attached to the frame of the drum to gatherand force additional air into the dryer drum as it rotates, to furtherthe efficiency of the drying process by forcing additional dry solarheated ambient air through the tumbling clothes which in turn isexpelled when laden with moisture from the wet clothes through theperimeter of the drum as the clothes strike the inside perimeter surfaceof the drum where they fall.

The purpose-designed motor used for rotating the drum is highefficiency, equipped with variable speed and a demand sensor. Said motorwill not run if the dryer is over-loaded with too much weight. Thevariable speed makes it possible to control the speed of rotation,thereby making it possible to control the point at which the clotheswithin the drum free fall. This optimizes the drying process by havingthe clothes falling and fluttering the greatest distance possible withinthe drum. It also serves to expel the greatest amount of moisture ladenair. Clothes push air out of the openings of the drum when they compressas they land against the inside perimeter of the dryer drum and freefalling clothes will push out more air than clothes which are rollingwithin the drum. The more moisture laden air that is pushed out by theclothes, the more solar heated air is sucked into the dryer drum. Thedemand sensor on the motor automatically lowers the amount of energyused as the clothes become lighter as they dry, requiring less energy torotate the dryer drum.

The frame supporting the rotating drum in the preferred embodiment ofthis patent is fabricated of hollow metal tubing, but can be fabricatedof blow, roto or injected molded plastic or other suitable material.

The ambient air dryer is used primarily outdoors so safety is essential.In this embodiment there are exposed moving parts that without safetydevices could pose a threat of injury to persons or animals. Toalleviate this danger of moving parts, the frame on which the dryer drumrotates has motion and/or heat sensors located on each side of thedryer. Each sensor is multi-directional, detecting motion/heat fromevery direction for a pre-determined distance considered safe. Anymotion or heat detection within that distance, whether it be from anadult, child, or animal will immediately stop the motor, rotating drumand any other moving part of the dryer. In addition a sound emitter atfrequencies not detectable to human ears will operate to repel smallanimals and birds from the immediate area of the dryer. Re-starting thedryer will require the operator to enter a start-up code. After enteringthe start-up code, the dryer will remain motionless until the operatoris beyond the range of the motion/heat detectors. Inclusion of a groundfault circuit interrupter (GFCI) in the control panel will insure thatprotection to the user who may or may not have available use of such aprotected circuit.

The preferred embodiment of this present patent has wheels on the baseof the frame supporting the dryer drum, at least two of which havelocking capability to keep the dryer from moving.

An upset switch will immediately stop all the moving parts of the dryerif the dryer moves or tips over. The dryer may not be restarted until inthe upright position, operator enters start up code and moves apre-determined distance away.

Dust and lint particles drop through the mesh on the dryer drum at thepoint where the free falling clothes hit the inside perimeter of thedrum. A screen type of lint filter is positioned under the drum at thisposition to catch these particles. In addition a soft brush sweeps theexterior of the drum to brush off any particles as the drum rotates. Afan under the filter draws air through the filter to further enhance thegathering and containment of any particles exiting the rotating dryerdrum. A sensor on the filter indicates on the control panel and remotecontrol when the filter requires service.

Lights are affixed to the frame supporting the dryer drum at the pointof the bearing or other suitable location. These lights are directed toshine toward reflectors mounted along the edge of the sides of the dryerdrum. When the dryer drum is rotating in the dark these lights andreflectors make the rotating drum visible.

A control panel is suitably located on the dryer frame with a numeralkey pad, messaging display screen, audio alarm, lighted alarm, soundemitter, and menu, functions of said menu which include instructions foroperation, humidity reading at dryer location, elapsed time the currentload has been in the dryer, programmable settings such as delayed startup, plus time and date. The control panel also includes a ground faultcircuit interrupter.

A typical wireless remote control programmed for the specific needs ofthe dryer can also operate the dryer, permitting the operator to controlthe dryer from a distance out of the direct sun and including the samefunctions as the control panel on the dryer frame.

Further improvements include portability functions. For ease in storage,the dryer drum can be made of materials allowing it to collapse orshaped in two pieces which fit inside one another. Especially forsmaller models, extendable legs for the wheels raise the dryer for easein use. The dryer frame can be made to fold to a smaller configurationwhen the dryer drum has been removed.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1, item 1, shows the ambient air dryer in the rotatableconfiguration of an octagon.

FIG. 1, item 2, shows an affixed circular carrier for a belt drivenapplication.

FIG. 1, item 3, shows the perimeter entry door in the open, “access”position.

FIG. 1, item 4, shows this dryer application rotated on a centralbearing.

FIG. 2, item 5, shows the ambient air dryer in the rotatableconfiguration of a circle.

FIG. 2, item 6, shows the perimeter entry door in the open, “access”position.

FIG. 3, item 7, shows the perimeter view of the dryer rotated on acentral bearing on each side.

FIG. 3, item 8, shows a perimeter door in the closed position.

FIG. 3, item 8A, indicates a frame member.

FIG. 4, item 9, shows the perimeter door of the dryer in the open,“access” position.

FIG. 4, item 10, shows the interior of dryer drum through the open door.

FIG. 5, item 11, shows the ambient air dryer in the rotatableconfiguration of a circle in a roller driven application.

FIG. 5, item 12, shows a centrally located entry door in the closedposition.

FIG. 6, item 13, shows the centrally located entry door in an openposition.

FIG. 7, item 14, shows an entry door on the side of the drum in a beltdriven application.

FIG. 7, item 15, shows a configuration of the frame for an entry doorlocated on the side of the drum in a belt driven application.

FIG. 8, item 16, shows the framework for the side of the dryer drum inan octagon configuration.

FIG. 9, item 17, shows an attachable panel for the perimeter of thedryer drum.

FIG. 9, item 18, shows the open mesh that is attached or molded withinthe frame.

FIG. 10, item 19, shows frame for attachable piece for side of drum.

FIG. 10, item 20, shows attachable or molded mesh.

FIG. 10, item 21, shows this application attached by screws to frame.

FIG. 11, item 22, shows the frame with mesh of FIG. 10 attached to rigidframe of dryer side.

FIG. 12, item 23, shows some suggested points for attaching extrusionsfor forcing additional air into the drum.

FIG. 13, item 24, indicates shape of extruded parts for forcing air intothe dryer drum.

FIG. 13, item 25, shows closed end of extruded part.

FIG. 13, item 26, shows open space leading into dryer drum.

FIG. 13, item 27, shows two attached parts with open mesh allowing airto freely pass through into dryer drum.

FIG. 14, item 28, shows side view of extruded shape for forcing air intothe dryer drum.

FIG. 14 shows side view of attached open mesh parts for allowing air topass through, item 29, indicating direction of air flowing into thedryer drum.

FIG. 14, item 30, indicates passage of air through open mesh into dryerdrum.

FIG. 15, item 31, shows the component with an extruded shape with anopen front to allow for free passage of air into the openings of thedryer drum.

FIG. 16 indicates by use of multiple directional arrows from themotion/heat sensors which are located to detect any motion or heatwithin a pre-determined range of the dryer.

FIG. 17, item 32, is an above view of the dryer with directional arrowsindicating the field of detection by the sensors.

FIG. 18, item 33, indicates direction of rotation of dryer drum.

FIG. 18 item 34 indicates edge of dryer drum.

FIG. 18, item 35, indicates direction of freefalling clothes withindryer drum.

FIG. 18, item 36, indicates motor.

FIG. 18, item 37, indicates soft brush along the edge of filter shroud.

FIG. 18, item 38, indicates filter within shroud.

FIG. 18, item 39, indicates shroud for filter.

FIG. 18, item 40, indicates duct from shroud to fan.

FIG. 18, item 41, indicates supporting frame for shroud.

FIG. 19, item 42, shows view from perimeter of drum of the filtershroud.

FIG. 19, item 43, shows exhaust fan.

FIG. 19, item 44, shows motor with shaft on each side, one end of whichshaft operating exhaust fan.

FIG. 20 shows a portion of the dryer drum, item 45 indicating one of thelights attached to the motor mount on the side of dryer drum frame.

FIG. 20, item 46, indicates directional arrows of illumination fromlight attached to dryer frame as well as directional arrows ofillumination from a light source other than the light on the dryer.

FIG. 20, item 47, indicates reflector positioned to reflect illuminationfrom light attached to frame.

FIG. 20, item 48, indicates a reflector positioned to reflectillumination from sources other than the light attached to the frame.

FIG. 21 indicates the remote control for the ambient air dryer.

FIG. 21, item 49, indicates a button for turning power on and off.

FIG. 21, item 50, indicates keypad for entering codes and operation ofmenu options.

FIG. 21, item 51, indicates the menu button.

FIG. 21, item 52, indicates a display screen for messaging, said screenin drawing indicating an “error, plugged filter” message.

FIG. 21, item 53, is flashing alarm button.

FIG. 21, item 54, indicates speaker for alarm sound and other audioalerts.

FIG. 22 indicates control box located on dryer frame.

FIG. 22, item 55, indicates key receptacle for locking cover down oncontrol box.

FIG. 22, item 56, indicates cover for control box.

FIG. 22, item 57, indicates one of the keys of the keypad.

FIG. 22, item 58, indicates power button for turning power on or off.

FIG. 22, item 59, indicates speaker for sound alarm and other audioalerts.

FIG. 22, item 60, indicates menu button.

FIG. 22, item 61, shows display screen for messaging.

FIG. 22, item 62, indicates flashing alarm button.

FIG. 22, item 63, indicates sound emitter button.

FIG. 23, item 64, indicates brake on stationary or swivel wheel ofdryer.

FIG. 24, item 65, indicates rear support member for dryer drum whichrotates on rollers.

FIG. 24, item 66, shows dryer wheels on extendable legs.

FIG. 25, item 67, shows back support member in a partial fold downposition.

FIG. 25, item 68, shows dryer wheels in the folded up position.

FIG. 25, item 69, shows frame support in a folded down position tofacilitate rolling dryer drum off frame.

FIG. 26, item 70, indicates rigid frame members of collapsible dryerdrum.

FIG. 26, item 71, indicates attached perforated member between rigidframe members of dryer drum.

FIG. 26, item 72, indicates by dotted lines the collapsible feature ofthe perforated material attached to frame members of the dryer drum.

FIG. 27, item 73, shows collapsible drum, side view, showing the rigidframe members configured in such a way that they fit within each otherwhen drum is collapsed.

FIG. 28, item 74, shows a perimeter view of half of a dryer drumconstructed in such a configuration that it will fit within the otherhalf of the dryer drum.

FIG. 28, item 75, indicates a locking type mechanism to secure togetherthe two halves of the dryer drum.

FIG. 29 indicates a portion of the central rigid member of the dryerdrum and driving roller, which, when in contact with each other, serveto rotate the dryer drum.

FIG. 29, item 76, indicates a suitable surface material such as thatused for serpentine belts on the drum to provide proper traction.

FIG. 29, item 77, indicates shape of drum in contact with drivingroller.

FIG. 29, item 78, indicates shape of the driving roller.

FIG. 29, item 79, indicates surface material such as that used forserpentine belts on driving roller to provide proper traction with thedryer drum member.

FIG. 29, item 80, indicates how a surface material such as that used forserpentine belts on the drum and driving roller fits together when incontact due to shaping of surface material.

FIG. 30 shows collapsible frame for dryer.

FIG. 30, item 81, indicates frame member in partial fold down position.

FIG. 30, item 82, indicates wheels folded up position.

FIG. 30, item 83, shows drum support in partial folded down position.

FIG. 30, item 84, shows frame and handle folded down position.

FIG. 31, item 85, shows side view of collapsible drum configuration withdoor suitable for frame with center bearings on each side of dryer drum.

FIG. 32, item 86, shows frame with vertical member in a belt drivenconfiguration that still allows for a door opening on the side of thedryer drum.

FIG. 33, item 87, shows a center opening door on collapsible drumconfiguration for the drum driven by rollers.

FIG. 34 is a view of a belt driven circular drum embodiment of theambient air dryer with many of the features, which have been shownindividually in other drawings, included in one drawing.

FIG. 34, item 88, indicates the telescoping handle.

FIG. 34, item 89, indicates one of the fasteners for side pieces ofdrum.

FIG. 34, item 90, indicates one of the lights mounted on bearing.

FIG. 34, item 91, indicates one of the set of reflectors on side ofdrum.

FIG. 34, item 92, indicates one of the air flow extrusions.

FIG. 34, item 93, indicates placement of a swivel wheel, placed so wheelmay swivel without interfering with frame member.

FIG. 34, item 94, indicates a one of several heat/motion detectors.

FIG. 34, item 95, indicates shroud/duct/filter system for thecontainment of lint and particulates.

FIG. 34, item 95, indicates shroud/duct/filter system for thecontainment of lint and particulates.

FIG. 34, item 96, indicates wheel brake.

FIG. 35 is identical to FIG. 34 without intrusive markings in order tobe used for the view drawing for the patent.

DETAILED DESCRIPTION OF THE INVENTION

The object of the present invention is to enhance the efficiency andease of use, increase safety, allow wider application and lower cost ofthe already energy saving ambient air dryer by utilizing improvedmanufacturing technology and present availability of materials; andproviding cost effectiveness. Use of motion/heat sensors and eliminatingthe guard as shown in a previous patent makes the dryer lighter inweight and easier to move. In addition, the elimination of the guardmakes for easier access to put items in and take items out of the dryer,increases the air flow through the dryer drum reducing drying time, andincreases the visibility of items in the dryer when running. Eliminationof the guard also lowers the cost of manufacture and shipping, which inturn lowers the retail price to the consumer.

Previous patents explained in detail a rotatable drum driven by a beltand a rotatable drum driven by rollers. Both of these methods functionsuitably. Manufacturers in recent years in the plastic molding industryhave become more experienced in larger consumer plastic products, makingit possible to fabricate the rotating drum utilizing a combination ofcomponents. The exact shape of the drum is of no consequence, so long asit is conveniently rotatable either by a belt or rollers, as shown inseveral different drawings.

FIG. 1 shows a rotatable drum configuration shaped like an octagon, item1, with a centrally located bearing, item 4, and with an affixedcircular carrier, item 2, for a belt driven application. This particularembodiment shows a door placed on the perimeter of the drum in the open,“access” position, item 3, said open position allowing for easy accessfor loading and unloading items. FIG. 2 shows a rotatable drumconfiguration in a circular shape, item 5, with a door placed on theperimeter shown in the open, access position, item 6. This circularshaped configuration of the dryer drum can be either belt or rollerdriven. FIG. 3 indicates a perimeter view of the drum with a centrallylocated bearing mounted on each side of the drum, item 7, with a doorlocated on the perimeter of the drum, item 8, shown closed in accessposition. FIG. 4 indicates a perimeter view of the dryer drum with aperimeter door shown in the open, access position, item 9. Item 10 showsthe interior of the drum as seen through the open door. FIG. 5 shows therotatable drum in the circular shaped configuration driven by rollers,item 11. The door in this embodiment which is driven by rollers can beplaced on the side of the drum, item 12, and is shown in the closedposition. FIG. 6 shows the embodiment of FIG. 5 with the door in theopen position, item 13. FIG. 7 shows yet another embodiment for thedryer drum with a centrally located bearing mounted on each side of thedrum. The frame, item 15, is constructed in such a way, as to permit adoor on side of the drum, item 14.

When the dryer is switched off, the rotation of the drum slows, thenstops at the access position for easy loading and unloading of the drum.FIG. 1, item 3 and FIG. 2, item 6, show two different embodiments ofdoors located on the perimeter of the drum and indicate the accessposition shown with open doors. FIG. 3, item 8 shows the access positionof a closed door located on the perimeter of the drum and FIG. 4, item 9shows this same embodiment with an open door. FIG. 5, item 12 shows theaccess position with a centrally located side door in closed positionand FIG. 6, item 13 shows the access position with a centrally locatedside door in open position. FIG. 7, item 14 shows yet another embodimentof the access location of a door located on the side on the dryer drum.

The dryer drum may also be stopped at “park” which positions the dooropposite a frame member of the apparatus frame to interfere with theopening of the door. In “park” position the closed door of FIG. 3, item8, would be positioned with frame member, item 8A, or any other framemember, opposite the door, thus interfering with the opening of saiddoor. In FIG. 7, the door, item 14, is shown in the closed “access”position. The closed door in “park” would be positioned opposite eitheror both frame members such as the frame member, item 15, to interferewith the opening of said door.

The dryer drum must be strong and stable, yet have ample openings forthe free exchange of air in order to function properly. The inside ofthe drum must be free of any protrusions or rough surfaces which couldsnag or damage clothing as the drum rotates, in addition to having theopenings for the free exchange of air small enough so buttons, fastenersand small items do not catch on or fall through the openings. FIG. 8,using the octagon shaped drum embodiment, shows a rigid, blow moldedframe or other suitable material for the side of the dryer drum, item16, designed with ample strength, stability and durability for thisapplication. The component part, FIG. 10, is fabricated to be attachedto the ribs and outer edge of the side frame of the dryer. The frame forthis component, item 19, can be plastic, metal or other suitablematerial; the mesh insert, item 20, can be plastic, metal or othersuitable perforated material; or the entire part can be formed of moldedplastic. The pieces for the eight components shown on this particularembodiment, FIG. 10, can be securely held in place by screws, item 21,rivets, welded or glued into receptacles molded into the frame, FIG. 8.With blow molded construction, the molded receptacles for receivingscrews or rivets are imbedded within the frame so no sharp edge isexposed inside or outside the dryer drum. FIG. 11, item 22, shows onesuch component attached to the side frame of this embodiment.

FIG. 9, the component pieces for the perimeter of the drum, eachconsisting of a rigid frame, item 17, with a mesh insert, item 18, arealso attached into receptacles molded into the outer edges of the blowmolded side frame, again into receptacles imbedded within the moldeddryer drum frame. These components can be fabricated entirely withmolded plastic or the frame can be a separate piece with an attachedmesh. Both frame and mesh can be formed of plastic, metal or othersuitable material or formed entirely of molded plastic.

The tumbling clothes within the present embodiment of this clothes dryerare dried by the dry air flowing through the clothes and moisture ladenair expelled from the dryer drum. The component part, FIG. 10, can bedesigned to incorporate extrusions that by design force additional airinto the dryer drum as the drum rotates, which necessarily facilitatesthe efficiency of the drying process. FIG. 12, item 23, shows anembodiment with eight typical locations along one edge of each part,such as the FIG. 10 part, for such increased air flow extrusions on theside of the dryer drum designed to force air into the rotating dryerdrum.

FIG. 13 shows a portion of this air flow extrusion. The component partis fabricated with a mesh to the front, item 27, said mesh perpendicularto the side of the dryer drum. The component part is shaped, item 24, tofunction as a scoop with closed ends, item 25, to force additional airinto the dryer drum as the drum rotates. The air enters the open meshopenings in the front, two of which are shown, item 27, and is forcedinto the opening to the dryer drum, item 26. The open mesh is attachedalong the entire front of the component for maximum efficiency. Thiscomponent part can be fabricated from plastic or other suitable materialwith attached mesh inserts; said inserts which can be fabricated fromplastic, metal or other suitable perforated material. This componentpart can be fabricated as a separate part to be attached to the dryerdrum or can be directly molded as part of one of the side pieces of thedrum. FIG. 14 shows a cut-a-way side view of this component, item 28,shaped to force air as shown by directional arrow, item 29, through themesh openings, item 30, into the dryer drum. The embodiment of thiscomponent part is designed to be used with an opening in the drum underthe part. FIG. 15 shows a partial embodiment of this component partindicating one of the closed ends, but the front of the part left openand placed over the mesh, item 31, on the side of the dryer drum. Eitherembodiment will function to force air into the dryer drum.

When this dryer is in operation, safety devices initiate to keep personsand/or animals from harm. FIG. 16 indicates by the multi-directionalarrows from motion/heat sensors, such as the type manufactured by Optexand Honeywell, placed on multiple sides of the dryer frame to detect anymotion or heat within a pre-determined range of the dryer. These sensorsdetect motion/heat from every side, above, and below the dryerapparatus. Any motion or heat detected by the sensors will immediatelyinterrupt power to the motor. The dryer will start again only with theuse of the start-up code.

In addition to the heat/motion sensors are sound emitters, inaudible tohumans but audible to animals, to keep animals and birds away from thedryer. The sound emitters will automatically function when the dryer isin operation and may be manually set to emit sound with either batterypower or an external power source even when the dryer is not inoperation, again to keep animals and birds away from the dryer.

FIG. 17, item 32, is a view from above the dryer apparatus withdirectional arrows indicating a pre-determined field of detection by thesensors located on the dryer's frame. Any motion/heat detected withinthis pre-determined field of detection will interrupt the power supplyto the motor and require the start-up code to re-start the dryer.

FIG. 18 shows the mechanism for the containment of lint and otherparticles exiting the drum from the tumbling clothes and items withinthe dryer drum. As the dryer drum rotates in the direction indicated byitem 33, the free falling items within the drum land in the areadesignated by the directional arrow, item 35. As items inside the dryerdrum fall against the open mesh they release lint and otherparticulates, which fall through the openings into the lint filter, item38, encased by the shroud, item 39. Soft brushes, item 37, are on bothsides and across lower edge of the shroud, item 39, thereby sweepingboth edges of the perimeter of the rotating dryer drum to keep lint andparticulates from floating or exiting off to the side as well assweeping across the perimeter of the drum, item 34, to further aid inthe capture of lint and other particulates by sweeping them into thefilter. The purpose-designed motor , item 36, used for rotating the drumis high efficiency, equipped with variable speed and a demand sensor.Said motor will not run if the dryer is over-loaded with too muchweight. Start up speed of the motor is slow, then increases tooperational speed over a sufficient period of time to prevent loss oftraction due to the possible high moment of inertia at start up. Thevariable speed makes it possible to control the speed of rotation,thereby making it possible to control the point at which the clotheswithin the drum free fall. This optimizes the drying process by havingthe clothes falling and fluttering the greatest distance possible withinthe drum. It also serves to expel the greatest amount of moisture ladenair. Clothes push air out of the openings of the drum as they land andcompress against the inside perimeter of the dryer drum and free fallingclothes will push out more air than clothes which are rolling within thedrum. The more moisture laden air that is pushed out by the clothes, themore solar heated air is sucked into the dryer drum. The demand sensoron the motor automatically lowers the amount of energy used as theclothes become lighter as they dry, requiring less energy to rotate thedryer drum.

In addition to the soft brushes, a motor, item 36, operated fan, FIG.19, item 43, is positioned to draw additional air through the filter toassist in capturing lint and particulates. This lint containmentassembly is supported by a frame, FIG. 18, item 41, which is in turnattached to the dryer frame. The shroud is molded plastic or othersuitable material and the flat lint filter, item 38, can be easilyremoved to clean. A duct, item 40, is connected to the shroud and leadsto the motor driven fan.

FIG. 19 shows the lint containment assembly from the perimeter view ofthe dryer. Item 42 indicates the shroud with the duct leading to thefan, item 43. Item 44 indicates the shaft of the motor which operatesthe fan as well as the mechanism to rotate the dryer drum.

This dryer which uses open, ambient air may be used in the dark as wellas daylight. As an added safety feature, lights, such as LED lights, areaffixed to the frame of the dryer. FIG. 20 shows a partial section ofthe dryer drum assembly. A light, item 45, is affixed to the bearingcover of the frame of the dryer. Reflectors are positioned along theedge of the dryer drum side. One reflector, item 47, is positioned toreflect illumination from the light source on the dryer. The otherreflector is positioned to reflect illumination from sources other thanon the dryer. The directional arrows, item 46, indicate the reflectedlight both from the light affixed to the dryer frame as well as from alight source other than on the dryer assembly. These lights andreflectors make the rotating drum visible in the dark or in partiallight.

FIG. 21 indicates a typical wireless remote control programmed for thespecific needs of the clothes dryer and permitting the operator tocontrol the dryer from a distance. Item 49 is an on/off switch. The“off” position slows, then stops the drum in access position. “Accessposition” stops the dryer drum in a convenient position for the loadingand unloading of the drum. A menu option allows the drum to be stoppedin “park position” as well to interfere with the opening of said door,particularly useful when dryer is not in use. The “on” position will notstart the dryer until the start-up code is entered and the operator hasmoved away to a pre-determined distance as detected by the motion/heatsensors. The “on” position also activates a sound emitted at a frequencyinaudible to humans but audible to animals to keep animals away from thedryer when in operation. Item 50 indicates several pads of the keypadcontrol, said keypad control used for the start-up code and menufunctions.

Item 51 indicates the “menu” button and displays a list of functions onthe messaging display screen, item 52. The menu list includesinstructions for general use (ie. on”, “off”, entering secure start upcode, manually setting sound emitter to continue to function when dryeris off, setting delayed start, setting on again off again cycle forrotation of drum for pre-drying hard to dry items); information(humidity at dryer location, elapsed time since load put into dryer,estimated dry time, programmable settings such as delayed start up, plustime and date); and error messages (plugged filter, overloaded, heavypoint weight, water on dryer, fire, dryer moved or tipped). The displayscreen, item 52, automatically displays error/general messages andremedies.

Item 54 is the alarm light which lights up or flashes for pre-determinedissues, such as the dryer stopping. Item 55 is a speaker for the alarmwhich sounds when the alarm light is on. This alarm will sound forseveral pre-determined issues such as the dryer stopping or errormessages such as “dryer tipped”, “fire” or “water on dryer”. Saidspeaker sounds a lesser sound for pre-determined less critical errormessages such as plugged filter, overloaded, and heavy point weight.This speaker can also give audio messaging for all functions on themenu. The alarm functions operate even when the dryer is not in use byusing battery power as well as an external power source in order toprevent unauthorized tampering with the dryer when unattended and not inuse in an unsecured area.

FIG. 22 indicates the control box suitably located on the dryer frame.Item 55 indicates the receptacle for a key for locking the closed cover.Item 56 indicates the cover, shown in a partially open position, whichfits over the controls for protection from the elements or tampering.Item 57 indicates one of the pads for the keypad control, said keypadcontrol used for the start-up code as well as menu functions. Item 58indicates the on/off button. The “on” function engages power to thedryer. To initiate the tumbling motion of the drum, a start-up code mustbe entered and operator must move away from the dryer for apre-determined distance before the dryer drum will actually begin torotate. The “on” function also engages the sound emitter. The “off” cutsoff power to the dryer. The dryer drum will automatically stop asoperator moves toward the operating dryer, but the power source remainsengaged until dryer is actually turned off or until not in use for apre-determined length of time. Item 59 in the speaker for audio alerts.An alarm will sound for several pre-determined issues such as the dryerstopping or error messages such as “dryer tipped”, “fire” or “water ondryer”. The speaker sounds a lesser sound for pre-determined, lesscritical error messages such as plugged filter, overloaded, and heavypoint weight. This speaker can also give audio messaging for allfunctions on the menu. The alarm functions operate even when the dryeris not in use by using battery power as well as an external power sourcein order to prevent unauthorized tampering with the dryer whenunattended and not in use in an unsecured area.

Item 60 is the menu button and displays a list of functions of themessaging display screen, item 61. The menu list includes instructionsfor general use (ie. on”, “off”, entering secure start up code, manuallysetting sound emitter to continue to function when dryer is off, settingdelayed start, setting on again off again cycle for rotation of drum forpre-drying hard to dry items); information (humidity at dryer location,elapsed time since load put into dryer, estimated dry time, programmablesettings such as delayed start up, plus time and date); and errormessages (plugged filter, overloaded, heavy point weight, water ondryer, fire, dryer moved or tipped).

Item 61 is the messaging display screen which automatically displayserror/general messages such as the “error plugged filter” as shown,remedies for error messages, plus the menu options. Item 62 is the alarmlight which lights up or flashes for all the alarm functions associatedwith the speaker. The alarm functions, including this alarm light,operate even when the dryer is not in use by using battery power as wellas an external power source in order to prevent unauthorized tamperingwith the dryer when unattended and not in use in an unsecured area. Item63 is the sound emitter button which when engaged continually emitssound even when the dryer is in “off” mode. Inclusion of a ground faultcircuit interrupter (GFCI) in the control panel insures that protectionto the user who may or may not have available use of such a protectedcircuit.

FIG. 23 shows one typical wheel of the type attached to the dryer frame.Item 64 indicates a standard type of lock for the wheel which can beoperated by foot or hand. These locking wheels are on a minimum of twowheels to keep the dryer from moving when positioned and when drum is inmotion. These wheels may or may not swivel or may be used incombination.

FIG. 24 shows a side view embodiment of the clothes dryer with a beltdriven drum. Item 65 shows the rear support member for the dryer drum.Item 66 shows wheels with extendable legs in the extended position inorder to raise the dryer assembly for more ease in use. The wheels havetwo positions. The extension leg can swing out as indicated by thecurved arrow and slide into a slotted bracket as shown in FIG. 25.

It is not necessary that the ambient air dryer be portable. However, allthe embodiments of the ambient air dryer in the drawings have been shownin a portable configuration with wheels. In addition to wheels, theambient air dryer can be further configured to aid in portability andstorage. FIG. 25 indicates portability/storage functions of the clothesdryer assembly which is driven with rollers and supported by a rearsupport member. Item 67 indicates the disengaged rear support member forthe dryer drum in a partially folded down position. Item 68A and 68Bshow the wheels with extendable legs. Item 68A is already slid intoposition along the frame; item 68B to be slid into position along theframe. Item 69 indicates a frame member tipped forward to facilitaterolling the dryer drum off the frame.

FIG. 26 shows the perimeter view of a collapsible drum with silicon orother suitable flexible perforated material affixed to rigid framemembers, said drum designed for portability and ease in storage. Item 70indicates the rigid members of the drum. Item 71 indicates one of theseveral perforated flexible parts of the dryer drum and item 72indicates how the flexible parts of the dryer drum fold in order tocollapse.

FIG. 27 shows the side view of the collapsible dryer drum. Item 73indicates how the rigid members of the drum are configured to allow eachpart of the collapsible drum to fit inside one another when the dryerdrum is collapsed, thus allowing for more convenient and space savingstorage.

FIG. 28 shows the perimeter view of a dryer drum that is configured tocome apart at the mid perimeter point, said drum designed forportability and ease in storage. The two halves of the dryer drum areshaped with the outside circumference of the drum smaller than thecircumference at the point of attachment to the other half, item 74, sothe two halves of the drum fit inside one another when the dryer drum isdisassembled. Item 75 indicates a locking mechanism so the two halves ofthe dryer drum can be securely fitted together when assembled for use.As shown, the extended portions on the edge of each dryer half areconfigured so the drum parts are fitted together, then turned to locktogether securely. As an added safety precaution, these drum halves arealso fitted with a pin or screw to lock and prevent the two halves fromrotating separately and coming apart.

FIG. 29 indicates a portion of the rigid center member on thecollapsible dryer drum, such as the drum of FIG. 26, which, when inoperation, is in contact with the driving roller which rotates the drum.Item 76 indicates a surface material attached to the rigid center memberon the collapsible dryer drum, this material being suitable fortraction, durability and shape, such as the material used for serpentineautomotive belts, to adhere to the surface material on the drivingroller. Item 77 indicates the shape of a small portion of the flexiblematerial of the dryer drum that is affixed to the rigid frame. Item 78indicates the shaped driving roller designed to help keep the drum inthe proper position while rotating. Item 79 indicates a surface materialattached to the drive roller, this material being suitable for traction,durability and shape, such as the material used for serpentineautomotive belts, to adhere to the surface material on the rigid centermember on the collapsible dryer drum. Item 80 indicates the shape of thesurface materials on both the rigid center member on the collapsibledryer drum and the driving roller which, when in contact with eachother, fit together in addition to the traction from the materialadhered to both parts to provide stability when dryer drum is in motion.

FIG. 30 indicates a collapsible frame for the dryer drum in a partiallycollapsed position. Item 81 shows a portion of the frame which can foldoutward to help in rolling drum off frame or fold inward as shown formore compact storage of the frame. Item 82 shows the extendable wheelsstill operational in their folded up position. Item 83 shows the drumsupport member in a partially folded down position. This member foldsdown to a horizontal position for more compact storage. Item 84indicates the portion of the frame which includes the controlstelescoped in the “down” position for more compact storage.

FIG. 31 shows the side view of a collapsible drum configuration with adoor configuration, item 85, suitable for a supporting frame with acenter bearing and support on both sides. It is also suitable for aconfiguration with a back support center bearing only.

FIG. 32 indicates a frame support consisting of a center bearing on eachside of the dryer drum which is rotated by a circular belt that allowsfor a door opening on the side of the drum with no impediment from theframe.

FIG. 33 shows the collapsible dryer drum configuration driven by rollerswith a center door, item 87, located on the side of the dryer drum.

FIG. 34 shows an embodiment of the ambient air clothes dryer withmultiple improvements shown on a single drawing. All of these particularimprovements have been shown and explained individually in otherdrawings. Item 88 is the telescoping handle. Item 89 indicates one ofthe fasteners for attaching drum side pieces to the drum frame. Item 90indicates one of the lights mounted on the center bearing cover thatshines toward the reflectors, one of which is item 91. Item 92 indicatesone of the air flow extrusions on the side of the dryer drum. Item 93indicates a positioning of one of the wheels on the end of a portion ofthe frame of the dryer to accommodate a swivel. Item 94 indicates one ofseveral heat/motion sensors. Item 95 indicates the support frame,shroud, duct, filter and brushes for capturing lint and particulateswhen the dryer drum is in motion. Item 96 indicates a wheel lockingmechanism.

FIG. 35 is identical to FIG. 34 except without intruding item numbersand may be used as the view drawing for the patent.

1. An improved apparatus for drying clothes in open, ambient air whichincludes the following: a drum using a combination of components forease and savings in manufacture, construction and shipping costs suchas: a blow molded drum frame; appropriately designed, framed or unframedmolded plastic, metal mesh or other appropriate perforated materialattached to drum frame; drum formed in any rotatable configuration suchas circular or octagon and driven by belt or rollers; and drumconstructed in pieces for assembly.
 2. Said drum of claim 1, whereinextrusions are attached or formed within the construction of the drummembers; said extrusions functioning as scoops to cause an additionalamount of ambient air to be passed through the clothes withcorresponding moisture laden air expelled through the openings of thedrum.
 3. Said drum of claim 2, whereby re-cycled resins may be used inpart or used completely for manufacture to reduce the cost of making thedrum or parts of the drum and dramatically reducing the energy requiredfor the manufacture of the resin used.
 4. Said drum of claim 3, wherebya UV inhibitor is used in manufacture, such as carbon black (the mostefficient UV inhibitor in addition to being the most cost effective) toextend the life and durability of the resin when apparatus is usedoutdoors in the sunlight.
 5. Said drum of claim 4, further comprising acover on bearing mount with lights such as LED lights so moving dryerdrum can be seen at night or in partial light; said drum includingreflectors situated along outside edge of dryer; lights on bearing mountof said drum positioned to shine toward reflectors to further illuminatemoving dryer in the dark or in partial light; and said reflectorssituated to reflect the light produced by lights on the dryer frame aswell as light from other sources.
 6. Said drum of claim 5 mounted on anappropriate frame with a suitably mounted purpose-designed motor torotate said drum; said motor with following features: slow start upspeed increasing to operational speed over a sufficient period of timeto prevent loss of traction due to the possible high moment of inertiaat start up; high energy efficiency; over-heating shut down designed tostop if over-loaded; equipped with a demand sensor which utilizes lessenergy as the clothes become lighter weight as they dry; designed toslow speed of revolution before stopping at pre-programmed point ofrotation for access position for easy access for loading and unloading;designed to slow speed of revolution before stopping at an additionalpre-programmed point of rotation for park position to position door byframe members of the dryer so door cannot be opened; and equipped with avariable speed making it possible to control the point at which theclothes free fall within the dryer.
 7. Said apparatus of claim 6,whereby is used an electronically programmed sequence which cycles themotor on and off to pre-dry hard to dry fabrics to provide greaterefficiency.
 8. Said apparatus of claim 7, further including devices,many commonly available but used in a new application, to enhance safetyand ease of use which include: motion and/or heat sensors which willimmediately stop dryer if anyone approaches operating dryer at a presetunsafe distance from any direction; a sound emitter at frequencies notdetectable to human ears to repel small animals and birds from immediatearea of the dryer; a system for turning on the dryer which requires acode to start; a requirement for the operator to move back to apre-determined safe distance as detected by motion/heat sensors afterturning on the dryer before dryer actually begins to operate; an upsetswitch which will immediately stop the dryer in case it is tipped over;a “park position” which stops the dryer drum in such a position that thedoor of the dryer drum cannot be opened when dryer is not in use; adouble insulated electrical design where no parts subject to electricalcurrent are accessible; electrical grounding provided through all partsto the wheels; and a Ground Fault Circuit Interrupter to halt powersupply to the unit if proper ground is lost.
 9. Said apparatus of claim8 further comprising a system for capturing lint which includes: a lintscreen type filter located under the drum at the point where lint andparticles from drying clothes exit the drum; a soft brush attached tothe filter housing touching the dryer drum along perimeter of the drumat point where lint and particles from drying clothes exits the drum tofurther sweep lint into the filter; a small fan under lint filterdrawing air through the filter; and a sensor attached to filter whichindicates by sound and/or message on messaging screen on the control orremote control when the filter is plugged.
 10. Said apparatus of claim 9further comprising a control panel including a GFCI (ground faultcircuit interrupter) with an on/off switch, typical wireless key pad,messaging display screen, menu button, sound emitter button, alarmlight, and speaker for audio messaging and alarms positioned on frame ofdryer specifically programmed with the following functions: keypad forentering start-up code and moving through and responding to menuoptions; “on” function requiring code to start and operator to move awayto pre-determined safe distance before initiating rotating drumoperation; “off” function which ceases power to dryer; menu withmessaging on display screen for functions available on dryer whichinclude: instructions for general use (ie. “on”, “off”, entering securestart up code, manually setting sound emitter to continue to functionwhen dryer is off, setting delayed start, setting on/off rotation ofdrum for pre-drying hard to dry items); information (humidity at dryerlocation, elapsed time since load put into dryer, estimated dry time,time and date); error messages (plugged filter, overloaded, heavy pointweight, water on dryer, fire, dryer moved or tipped); speaker whichsounds an alarm for pre-determined critical error messages (water ondryer, fire, dryer tipped over); said speaker which sounds a repeatinglesser sound for pre-determined error messages (plugged filter,overloaded, heavy point weight); said speaker for audio messaging forall functions on the menu; and Ground Fault Circuit Interrupter whichhalts power supply to the unit if proper ground is lost.
 11. Saidapparatus of claim 10 including a typical wireless remote control withan on/off switch, key pad, messaging display screen, menu button, alarmlight, and speaker for audio messaging and alarms specificallyprogrammed with the following functions: keypad for entering start-upcode and moving through and responding to menu options; “on” functionrequiring code to start and operator to move away to pre-determined safedistance before initiating rotating drum operation; “off” function whichslows, then stops dryer drum at “access” or “park” position; said “off”function which can halt the power supply to the unit; menu withmessaging on display screen for functions available on dryer whichinclude: instructions for general use (ie. “on”, “off”, entering securestart up code, manually setting sound emitter to continue to functionwhen dryer is off, setting delayed start, setting on/off rotation ofdrum for pre-drying hard to dry items); information (humidity at dryerlocation, elapsed time since load put into dryer, estimated dry time,time and date); error messages (plugged filter, overloaded, heavy pointweight, water on dryer, fire, dryer moved or tipped); speaker whichsounds an alarm for pre-determined critical error messages (water ondryer, fire, dryer tipped over); said speaker which sounds a repeatinglesser sound for pre-determined error messages (plugged filter,overloaded, heavy point weight); and said speaker which gives verbalmessages for all functions on the menu.
 12. Said drum of the apparatusof claim 11 wherein is added a non static electricity additive to resinto help prevent any sparking from dried items in dryer.
 13. Said frameof apparatus of claim 12 whereby extensions on the frame are able tolift the apparatus for ease in use.
 14. The apparatus for dryingclothes, further comprising optional drum and framework designs toincrease portability and storage options such as: the bracket holdingthe dryer drum designed to be disengaged so the drum may be lifted orrolled out of the frame; support members of frame specifically designedto facilitate rolling disengaged drum out of frame; drum of apparatusmade in two halves designed to be disassembled to fit one inside theother for storage; a foldable frame to allow frame to be folded flat forstorage when drum removed; silicon inserts or other appropriate flexibleperforated material attached to a framework making it possible toflatten the drum for storage; and framework for attached flexibleinserts comprised of gradated sized shapes making it possible for eachshape to fit within the next larger shape when the drum is flattened.